Advertisements
Advertisements
Question
The zero of the polynomial 2x + 5 is
Options
`5/2`
`-5/2`
`2/5`
`-2/5`
Advertisements
Solution
`-5/2`
Explanation;
Hint:
2x + 5 = 0
⇒ 2x = −5
⇒ x = `-5/2`
APPEARS IN
RELATED QUESTIONS
Find the value of the polynomial 5x – 4x2 + 3 at x = 0.
Verify whether the following zeroes of the polynomial are indicated against them.
p(x) = 5x – π, `x = 4/5`
Verify whether the following zeroes of the polynomial, indicated against them.
p(x) = 2x + 1, `x = 1/2`
Find the zero of the polynomial in the following case:
p(x) = x – 5
Find the zero of the polynomial in the following case:
p(x) = 3x
Find the zero of the polynomial in the following case:
p(x) = ax, a ≠ 0
Find the zero of the polynomial in the following case:
p(x) = cx + d, c ≠ 0, c, d are real numbers.
Verify whether the indicated numbers is zeroes of the polynomials corresponding to them in the following case:
`f ( x ) = 3x +1, x = - 1/3`
Verify whether the indicated numbers is zeroes of the polynomials corresponding to them in the following case:
`g(x)=3x^2-2,` `x=2/sqrt3 2/sqrt3`
Verify whether the indicated numbers is zeroes of the polynomials corresponding to them in the following case:
`f(x) = lx + m , x = - m/1`
Find the zero of the polynomial of the following:
p(x) = x – 3
Find the zero of the polynomial of the following:
q(y) = 2y – 3
Find the zero of the polynomial of the following:
p(x) = ax when a ≠ 0
Find the zero of the polynomial in the following:
h(x) = ax + b, a ≠ 0, a, b ∈ R
Verify whether the following are zeros of the polynomial indicated against them, or not
p(x) = 2x − 1, x = `1/2`
Verify whether the following are zeros of the polynomial, indicated against them, or not
p(x) = x3 – 1, x = 1
Verify whether the following are zeros of the polynomial, indicated against them, or not
p(x) = (x + 3) (x – 4), x = −3, x = 4
Find the number of zeros of the following polynomial represented by their graph
Find the number of zeros of the following polynomial represented by their graph
Find the number of zeros of the following polynomial represented by their graph
If p(x) = x + 3, then p(x) + p(–x) is equal to ______.
One of the zeroes of the polynomial 2x2 + 7x – 4 is ______.
A polynomial cannot have more than one zero
Find p(0), p(1), p(–2) for the following polynomial:
p(y) = (y + 2)(y – 2)
0 and 2 are the zeroes of t2 – 2t
Find the zeroes of the polynomial in the following:
p(x) = x – 4
Find the zeroes of the polynomial in the following:
g(x) = 3 – 6x
If a, b, c are all non-zero and a + b + c = 0, prove that `a^2/(bc) + b^2/(ca) + c^2/(ab) = 3`.
